Royal Academy of Arts <Great Britain>, Joachimides, C. M., & Becker, W. (1985). German art in the 20th Century: Painting and sculpture 1905-1985 / edited by Christos M. Joachimides. With contributions by Werner Becker. Co-ordinating editor Walter Grasskamp. Prestel [u.a.].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Royal Academy of Arts <Great Britain>, Christos M. Joachimides, و Werner Becker. German Art in the 20th Century: Painting and Sculpture 1905-1985 / Edited by Christos M. Joachimides. With Contributions by Werner Becker. Co-ordinating Editor Walter Grasskamp. München: Prestel [u.a.], 1985.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Royal Academy of Arts <Great Britain>, et al. German Art in the 20th Century: Painting and Sculpture 1905-1985 / Edited by Christos M. Joachimides. With Contributions by Werner Becker. Co-ordinating Editor Walter Grasskamp. Prestel [u.a.], 1985.